Standard
[CURRENT]
ISO 4504:2023-06
Plastics - Polyethylene (PE) - Determination of co-monomer content by solution state 13C-NMR spectrometry
German title
Kunststoffe - Polyethylen (PE) - Bestimmung des Co-Monomer-Gehalts mittels 13C-NMR-Spektrometrie im Lösungszustand
Publication date
2023-06
Original language
English
Pages
25
Publication date
2023-06
Original language
English
Pages
25
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Content
Content (en)
Foreword
Hauptteil
Show subsection Close subsection Scope
Normative references
Terms, definitions, symbols and abbreviated terms
Show subsection Close subsection Terms and definitions
Symbols
Abbreviated terms
Principle
Reagents and materials
Apparatus
Preparation and preservation of test samples
Method A — Inverse gated decoupling method
Show subsection Close subsection Sample preparation
Procedure
Calculation
Method B — Insensitive nuclei enhanced by polarization transfer method
Show subsection Close subsection Sample preparation
Procedure
Calculation
Expression of results
Precision
Test report
Spectral integration method and integration limits outlines (normative)
Summary of formulae (normative)
Show subsection Close subsection Method A — Formulae for calculating mole fraction composition
Show subsection Close subsection Mole fraction of propene in the ethylene-propene-1 copolymer P
Mole fraction of butene in the ethylene-butene-1 copolymer B
Mole fraction of hexene in the ethylene-hexene-1 copolymer H
Mole fraction of octene in the ethylene-octene-1 copolymer O
Mole fraction of 4-methylpentene-1 in the ethylene-4-methylpentene-1 copolymer MP
Method B — Formulae for calculating mole fraction composition
Show subsection Close subsection Mole fraction of propene in the ethylene-propene-1 copolymer P
Mole fraction of butene in the ethylene-butene-1 copolymer B
Mole fraction of hexene in the ethylene-hexene-1 copolymer H
Mole fraction of octene in the ethylene-octene-1 copolymer O
Mole fraction of 4-methylpentene-1 in the ethylene-4-methylpentene-1 copolymer MP
Conversion from mole fraction alkene-1 to branches per 1 000 carbons
Calculation example of method A (informative)
Calculation example of method B (informative)
Reference longitudinal relaxation time(T) values (informative)
Show subsection Close subsection General
Reference longitudinal relaxation time(T) values of C nuclei
Reference longitudinal relaxation time(T) values of H nuclei
Chemical shift region of branch CH-carbon of different co-monomers (informative)
Summary of precision data (informative)
Introduction to pulse program (informative)
Consistency validation between method A and method B (informative)
Bibliography
Cooperation at DIN
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